Patent Profile
| Patent No: | EP2155607 [European Patent Office (EPO)] | Application No: | EP20080751453 |
| Title: | Process for the preparation of finely divided precipitated silica | ||
| Issue Date: | 08-07-2015 | File Date: | 23-04-2008 |
| Inventor(s): | Jasra Raksh Vir; Mody Haresh Mahipatlal; Somani Rajesh Shantilal; Bajaj Hari Chand; Shukla Dipak Balwantrai; Vyas Niraj Rameshchandra | ||
| IPC Classification: | C01B 33/193 | ||
| Abstract: | The present invention provides a process for the preparation of finely divided precipitated silica. Finely divided precipitated silica is prepared by neutralization of alkali silicate solution, under continuous stirring, at 60 to 900 deg. C in presence of alkali metal salt as coagulating agent, in various neutralization steps during which neutralization is interrupted for specific time. Further acidic silica sol, is added until 60 to 80 percent of total alkali is neutralized. The reaction mixture is then aged at least for 3 minute under continuous agitation, followed by circulation through centrifugal pump at an appropriate rate. | ||
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:91-278- 2569496 Ext. 6000, 6010
:https://www.csmcri.res.in
Industrial Applications
Chemistry, Chemical Processes Polymers [Chemistry, Chemical Processes]